Radiant flame compression burner



Nov. 5, 1946. w. w. KEMP RADIANT FLAME QoMPREssIoN BURNER Filed Jan. 2e,

2 Sheets-SheeI l .0 O .O G Y O O O Q G O -O .Y O

` r/ o oA o o o o o o o o o o vlv E Nov. 5, 1946. w. w. KEMP RADIANT FLAME COMPRESSION BURNER Filed Jan. 26, 1945 2 Sheets-Sheet 2 Patented Nov. 5, 1946 UNITED STATES PATENT OFFICE RADIANT FLAME COMPRESSION BURNER v William Wallace Kemp, Baltimore, Md., assignor` to The C. lVi. Kemp Manufacturing Company, Baltimore, Md., a corporation of Maryland Applicationjanuary 26, 1945, serial No. 574,796

11 Claims.

This invention relates to 'a radiant heat flame compression burner for singeing textiles. TeX- tiles have previously been singed very effectively according to the method and apparatus shown in Patent No. 1,862,960. It has been found that certain modifications in the burner there illustrated permit a greater speed of the fabric and a much improved singeing of the fabric.

The fabric in this invention is drawn across the burner in the direction of the arrow and in contact with the two water cooled edges which serve to properly distance the fabric from the refractory surface. Between these cooled edges are placed refractory bricks and from one of the edges a flame from a perfectly proportioned fuel and air mixture plays on the fabric and is deflected by the fabric against the refractory surface, heating this surface. The temperature of the surface is controlled by the volume of fuel and airy mixture burned; the amount of such mixture burned is determined by the speed at which the cloth travels and the extent to which the singeing is to be carried on. When the singeing is thorough and the cloth velocity high the fuel consumption is such as to produce an incandescence on the refractory surface. This incandescent surface in contact with the flame helps to maintain the flame at the maximum temperatures. It is the high temperatures of llame compressed between the cloth and the refractory surface which is so effective in singeing, and the compression is greater because of the wedge shape of the area between the refractory bed and the cloth, and the travel of the cloth pulls the flame toward the small end of that area. The radiant heat assists the singeing eect and adds to the effectiveness of the flame, the interacting effect of both factors accounting for the high eiciency of this device. This burner has extreme flexibility, is capable Aof producing a maximum singeing at high speeds on such fabrics as twills, drills and insulator cloth; at the same time by turning on to less extent it is splendidly suited for singeing rayons, acetates and even such light fabrics as voile. Two burners are generally used on any singeing machine, one burner for each side of the fabric.

Other objects and advantages of the invention will be apparent from the following description and the accompanying drawings forming a part hereof and in which:

Figure 1 is a top yplan view of the burner.

Figure 2 is a front elevational view thereof.

Figure 3 is a top plan view of the lower casting.

Figure 4 is a cross sectional view on line ll--4 of Figure 2. l

Figure 5 is a partial longitudinal sectional view on line 5-5 of Figure 4. y

In the drawings similar numerals refer to similar parts in the several views.

I between 'the twomembers.

The top burner portion 3 has burner orifices 6 projecting substantially at an angle of 45 to the cloth. A completely combustible mixture-of fuel and air is fed to. these orifices through the chambers I and 8'. After striking the cloth the llame travels parallel with it and is compressed between the cloth and the refractory surface, being drawn into the wedge shaped area partly by the cloth in its travel, and compressed against the cloth because of the shape of that area. The top burner portion is attached by means of bolts 9 to the lower burner portion I0, which is a triangular tubular member receiving a completely combustible mixture of air and fuel from one or both ends through pipes II. The triangular, tubular member has at the bottom thereof a plurality of valves I2 which when open admit the combustible mixture to the chamber 8; These chambers are formed in the lower vcasting I 0 and the top burner portion 3 and in the latter partitions I3 divide the chambers from each other and fromthe central chamber 'I'. The central chamber 1 is fed through openings I 4 in the top of the triangular section I0.

The top burner portion 3 and the rectangular tubular member 4 have water passages I5 and I6 therein and connections with the water feed Il, which passes the water first to passage liiand then through pipe I8 to passage I5 with an exit at I9.

The tops of the top burner portion 3 and the rectangular tubular member 4 are roundedA as shown at 20 and 2| and over these rounded shoulders the cloth or fabric passes at a rapid rate which can attain 500 yards per minute.

The valves I2 are opened or closed depending upon the width of the fabric being singed. The chamber I is substantially the length of the smallest width of fabric that it may `be desired to singe. The completely combustible mixture is ignited at the burner orices 6 and the flame is projected outwardly between the fabric and the refractory material or fire brick. The cloth and the shoulders on both sides of the re brick retain the flame in the compartment thus formed and force it down upon the lire brick which is heated to an intense white heat and radiates that heat to the fabric to singe the same completely at the rapid rate of passage of the fabric across the burner.

The cooling chambers on both sides of the refractory material keep the shoulders or edges of the burner cool. Theame is completely cutv off from following the fabric by these projecting edges 20 and 2|, edge 2l may be said to wipe the flame from the qfabric.l vThe spent gases escape from the ends of the burner at the edges of the fabric.

It will be seen that the burner of this invention holds the fabric the required distance from the incandescent radiating elements and a close regulation of the flame is permitted by the valves admitting the combustible mixture to the burner so that control of the extent of 'singe is always obtainable.

It will be apparent that many modifications may be made in the burner without departing from the invention as defined in the appended claims..

What is claimed as new and is desired tv be secured by Letters Patent is:

1. A arne compression burner comprising a bed adapted to have a fabric to be singed passed thereover, the fabric being sloped toward the bed in the direction of its travel, forming a wedge shaped area, a burner at the base of said area having orifices directed to project a flame into said area toward the apex thereof, contact with the moving fabric and the directed force of the flame forcing the iiame between the bed and fabric compressing the flame and bringing it into close contact with the fabric to singe the same.

2. A flame compression burner comprising a bed adapted to have a fabric to be singed passed thereover, the fabric being sloped toward the bed in the direction of its travel, forming a wedge shaped area, means at the edge of the bed nearest the fabric to space the fabric from the bed, a burner at the base of said area having orifices directed to project a flame into said area, toward the apex thereof, contact with the moving fabric and the directed force of the flame forc ing the iiame between the bed and fabric compressing tne flame and bringing it into close contact with the fabric to singe the same, said spacing means wiping the flame from the fabric. f 3. A iiame compression burner comprisinga bed adapted to have a fabric to be singed passed thereover, the fabric being sloped toward the bed in the direction of its travel, a burner at the edge of the bed most distant from the fabric having orices therein directed to project a flame into the restricted area formed by the bed and fabric, the fabric carrying the ame into said restricted area, and the flame being progressively compressed by said bed and fabric and brought into close contact with the fabric to singe the same.

4. A flame compression burner comprising a bed of refractory material adapted t0 have a fabric to be singed passed thereover, the fabric being sloped toward the bed in the direction of its travel, means at the edge of the bed nearest the fabric to space the fabric from the bed, a burner at the edge of. the bed opposite said spacing means having orifices therein directed to project a flame toward and into the restricted area formed by the bed and fabric, the bed and fabric compressing the ame, and bringing it into close contact with the bed, heating the same, and with the fabric to singe the same.

5. The process of singeing fabric comprising passing the fabric over a refractory burner bed, sloping the fabric toward the bed in the direction of its travel and projecting a flame toward, and into the restricted area formed by the bed and fabric, the travellingy fabric and directed force of the fiarne carrying the flame into said flame from the fabric within the restricted area.

7. The process of singeing fabric comprising passing the fabric over a refractory burner bed, sloping the fabric toward the bed in the direction of its travel, projecting a fiame under pressure from a burner toward and into the restricted area formed by the bed and fabric, the flame being progressively compressed by the bed and fabric, heatingthe refractory bed to conserve the heat of the flame and brought into close Contact with the fabric to singe the same.

8. A burner to singe fabric drawn thereover comprising a refractory bed, the fabric passing over the bed in close proximity thereto, a burner on the` leading side of said bed, where the fabric first comes adjacent the bed, having orifices therein directed to project a fiame into the space between the bed and fabric and toward the direction of fabric travel, the travelling fab-ric carrying the flame over the bed, heating the same,

the heated bed conserving the heat of the flame and forcing the flame into closeV contact with the fabric to singe the fabric.

9. A burner to singe fabric drawn thereover comprising a refractory bed, the fabric passing over the bed in close proximity thereto, a burner on the leading side of said bed, where the fabric first comes adjacent the bed, having orifices therein directed to project a flame into the space between the bed and fabric and toward the direction of fabric travel, heating the bed, the heated bed conserving the heat of the flame, and forcing the flame into close contact with the fabric, to singe the fabric', and means to substantially confine the ame between the bed and fabric.

10. A burner to singe fabric drawn thereover comprising a refractory bed, means on each side of the bed, transverse to the direction of-movement of the fabric, to space the fabric from the bed, one of said spacing means having burner orifices therein, directed to project a flame into the space between the bed and fabric and toward the direction of fabric travel, the fabric travelling from the burner orifices toward the bed and carrying the flame thereover, heating the bed, the bed forcing the flame into close contact with the fabric, to singe thev fabric, and the spacing means opposite the burner orifices substantially wiping the flame from the fabric.

11. A burner to singe fabric drawn thereover comprising a refractory bed, means on each side of the bed, transverse to the direction of movement of the fabric, to space thefabric from the bed, one of said spacing means having burner orifices therein, directed to project a fiame into the space between the bed and fabric and toward the direction of fabric travel, the fabric travelling from the burner orifices toward the bed and carrying the flame thereover, heating the bed, the bed forcing the flame intoclose contact with the fabric, to singe the fabric, and the spacing means opposite the burner orices sub-stantially wiping the ame from the fabric, said spacing means having passages therein, and means to pass a cooling medium therethrough.

WILLIAM WALLACE KEMP.` Y 

